High Silica Fiberglass Filter Mesh For Molten Aluminum Steel Foundry Filtration

High Silica Fiberglass Filter Mesh for Molten Aluminum Steel Foundry Filtration High Silica fiberglass filter mesh is weaved with high silica fiberglass yarn and coated with special refractory coating. It can effectively remove slag, refractory particles and non-metallic inclusions from molten metals. After special treatment, high silica mesh filters are capable of withstanding pouring temperatures up to 1620℃.  High Silica fiberglass mesh is an ideal filter for in-mold filtration of gray, malleable, white, compacted graphite and ductile cast irons, as well as non-ferrous aluminum and copper-based metal alloys and many types of small scale steel casting filtration. Besides the function of molten metal filtration, it also could be used for riser knock-off or de-gating knock-off. Investment casters have also placed the preformed cup shape filters in the wax mold gating system to filter metal at pattern entry. It is developed as a low cost but with rather filtration efficiency alternative to ceramic filters.   Product Features • Low cost and easy to use • Improves fluidity and metal distribution  • Removes micron sized inclusions and impurities • Can be used with existing pattern equipment • Eliminates inclusions created by ceramic chips   Product Parameters SiO2 content ≥96% Softening Point 1700℃ Working Temperature ≤1620℃ Sustaining Working Time 5 minutes Tensile Strength 16kg/4 ends Color Dark brown, black Mesh Size 0.8mm/1.0mm/1.5mm/2.0mm/2.5mm Density 300-600 g/cm2 Thermal Shock Resistance ≥2times/1100ºC‐Room temperature   Specification: Item Density Mesh size Porosity SiO2 Thickness  HSWM-15 580g/m2 1.5x1.5mm 0.19 ≥96% 0.98mm  HSWM-20 460g/m2 2.0x2.0mm 0.24 ≥96% 0.98mm  HSWM-25 350g/m2 2.5x2.5mm 0.33 ≥96% 0.98mm  Note: other specifications made as requests. Application: - Cut pieces for in mold filtration like sand casting, gravity casting, etc. - Cut pieces for riser sleeves, bottom or across ports in walls - Cut pieces to provide a weakened plane for riser knock-off - Cup shapes for investment casting